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ADUM2250_11

Description
SPECIALTY ANALOG CIRCUIT
Categorysemiconductor    Analog mixed-signal IC   
File Size303KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric View All

ADUM2250_11 Overview

SPECIALTY ANALOG CIRCUIT

ADUM2250_11 Parametric

Parameter NameAttribute value
stateACTIVE
Analog IC other typesANALOG CIRCUIT
Data Sheet
FEATURES
Hot-Swappable, Dual I
2
C Isolators, 5 kV
ADuM2250/ADuM2251
GENERAL DESCRIPTION
The ADuM2250/ADuM2251
1
are hot-swappable digital
isolators with nonlatching bidirectional communication
channels that are compatible with I
2
C® interfaces. This
eliminates the need for splitting I
2
C signals into separate
transmit and receive signals for use with standalone
optocouplers.
The ADuM2250 provides two bidirectional channels support-
ing a complete isolated I
2
C interface. The ADuM2251 provides
one bidirectional channel and one unidirectional channel for
those applications where a bidirectional clock is not required.
The ADuM2250/ADuM2251 contain hot-swap circuitry to
prevent data glitches when an unpowered card is inserted
onto an active bus.
These isolators are based on
iCoupler®
chip-scale transformer
technology from Analog Devices, Inc.
iCoupler
is a magnetic
isolation technology with performance, size, power consump-
tion, and functional advantages compared to optocouplers.
The ADuM2250/ADuM2251 integrate
iCoupler
channels
with semiconductor circuitry to enable a complete, isolated
I
2
C interface in a small form-factor package.
1
Bidirectional I
2
C communication
Open-drain interfaces
Suitable for hot-swap applications
30 mA current sink capability
1000 kHz operation
3.0 V to 5.5 V supply/logic levels
16-lead SOIC wide body package version (RW-16)
16-lead SOIC wide body enhanced creepage version (RI-16)
High temperature operation: 105°C
Safety and regulatory approvals (RI-16 package)
UL recognition: 5000 V rms for 1 minute per
UL 1577
CSA Component Acceptance Notice #5A
IEC 60601-1: 250 V rms (reinforced)
IEC 60950-1: 400 V rms (reinforced)
VDE Certificate of Conformity
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
V
IORM
= 846 V peak
APPLICATIONS
Isolated I
2
C, SMBus, or PMBus Interfaces
Multilevel I
2
C interfaces
Power supplies
Networking
Power-over-Ethernet
Protected by U.S. Patents 5,952,849; 6,873,065; and 7,075,329; other patents
pending.
FUNCTIONAL BLOCK DIAGRAMS
GND
1 1
16
GND
2
NC
V
DD2
NC
SDA
2
SCL
2
NC
GND
2
GND
1 1
16
GND
2
NC
V
DD2
NC
SDA
2
SCL
2
NC
GND
2
ADuM2250
NC
2
V
DD1 3
NC
4
SDA
1 5
SCL
1 6
GND
1 7
NC
8
NC = NO CONNECT
DECODE
ENCODE
DECODE
ENCODE
ENCODE
DECODE
ENCODE
DECODE
15
ADuM2251
NC
2
V
DD1 3
NC
4
SDA
1 5
SCL
1 6
GND
1 7
NC
8
NC = NO CONNECT
DECODE
ENCODE
ENCODE
ENCODE
DECODE
DECODE
15
14
14
13
13
12
12
11
11
10
10
06670-001
Figure 1. ADuM2250 Functional Block Diagram
Figure 2. ADuM2251 Functional Block Diagram
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2007–2011 Analog Devices, Inc. All rights reserved.
06670-002
9
9
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Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
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